RFR: Merge jdk8u:master

[Andrew John Hughes]

Merge jdk8u422-b04

GHA builds will not work until [JDK-8293107](https://bugs.openjdk.org/browse/JDK-8293107) is merged in 8u462-b01

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Commit messages:
 - Merge jdk8u422-b04
 - 8315020: The macro definition for LoongArch64 zero build is not accurate.

The merge commit only contains trivial merges, so no merge-specific webrevs have been generated.

Changes: https://git.openjdk.org/shenandoah-jdk8u/pull/77/files
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/shenandoah-jdk8u/pull/77.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk8u.git pull/77/head:pull/77

PR: https://git.openjdk.org/shenandoah-jdk8u/pull/77